The changeable-message concept of traffic control report of a conference held July 15-16, 1971.
| Format: | Knjiga |
|---|---|
| Jezik: | English |
| Izdano: |
Washington, D.C.
Highway Research Board, National Research Council
1972.
|
| Serija: | Special report (National Research Council (U.S.). Highway Research Board)
129. |
| Teme: |